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/**
* \file pageout.c
*
* \brief Segment page-out routines.
*
* This program is free software under the GNU General Public License
* (>=v2). Read the file COPYING that comes with GRASS for details.
*
* \author GRASS GIS Development Team
*
* \date 2005-2006
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <grass/segment.h>
/**
* \fn int segment_pageout(SEGMENT *SEG, int i)
*
* \brief Pages segment to disk.
*
* Finds segment value <b>i</b> in segment <b>seg</b> and pages it out
* to disk.
*
* \param[in] seg segment
* \param[in] i segment value
* \return 1 if successful
* \return -1 on error
*/
int segment_pageout(SEGMENT * SEG, int i)
{
segment_seek(SEG, SEG->scb[i].n, 0);
if (write(SEG->fd, SEG->scb[i].buf, SEG->size) != SEG->size) {
G_warning("segment_pageout: %s", strerror(errno));
return -1;
}
SEG->scb[i].dirty = 0;
return 1;
}
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